US PATENT SUBCLASS 250 / 235
.~.~.~ Repetitious path


Current as of: June, 1999
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250 /   HD   RADIANT ENERGY

200  DF  PHOTOCELLS; CIRCUITS AND APPARATUS {11}
216  DF  .~ Optical or pre-photocell system {11}
234  DF  .~.~ Means for moving optical system {1}
235.~.~.~ Repetitious path {1}
236  DF  .~.~.~.~> Rotary motion


DEFINITION

Classification: 250/235

(under subclass 234) Subject matter having means for cyclically moving an element of the optical system in a repetitious path.

(1) Note. This subclass includes photocell devices having a vibratory scanner. An adjusting means is not deemed a means for providing a repetitious path, since there is no means for ensuring repetition or cycling. A hunting device which follows another element does not cycle, even though the followed element may, during its motion, fortuitously cycle.